GRAPHIC-Brexit tremors spread to UK-exposed London stocks

Brexit fears appear to be affecting the UK stock market for the first time this week, as Britain's more globally exposed shares outpace those that could be hit harder should the country vote to leave the European Union. Some of Britain's biggest banks are seen as most at risk from a possible Brexit in the June 23 vote, and along with retailers, construction and travel firms, they have begun to underperform the market.